Birds fly to the south ()autumn.(填介词）

Birds fly to the south ()autumn.(填介词） In winter ,some birds fly to the south 为什么要用fly啊. Where ( ) the birds ( ) (fly) to?To the south.适当形式填空 the birds fly (higher) than the bees . duing the spring,some birds ___ the north of china1.go back 2.fly to 3.fly back4.back for Not all birds have to fly f___away. I like to watch the birds fly in the sky.为什么用fiy 而不用fiying? I like to watch the birds fly in the sky为什么用fiy 而不用fiying? Birds fly in the sky的意思 Sometime over the Rainbow,blue birds fly The birds were let to fly away last Saturday.请问句子中的let i saw three birds ( )high in the skyA,flies B,flying C,flied D,to fly 为什么“鸟会飞”译作birds fly,而不是the bird can fly? birds fly over the rainbow是什么意思birds fly over the rainbow why can't I... ___ winter ,some birds fly to the south___china1.in of 2.in to 3.on of 4.at to There are 60 birds in three trees.After a while 4 birds fly to the second tree from the frist treeand 7 birds fly to the third tree from the second tree.Then there are 20 birds in every tree.Do you know how many birds are there in every tree at first 找一首英文歌 歌词有shelter my eyes from the sun And wait for the birds to fly by look,the birds can -----(fly)in the sky.动词形式